• Code: C2A21, C2A22
• Description: • C2A21: Toner cartridge/C new release failure • C2A22: Toner cartridge/M new release failure. The status with the new unit is not cleared after the new toner cartridge is set.
• Causes: • Toner cartridge/ C,M,Y,K • MFP board (MFPB)
• Remedy: 1. Clean the connection between the toner cartridge and the machine if dirty. 2. Check the connector between the toner cartridge-relay CN79-MFPB CN35E for proper connection and correct as necessary. 3. Reinstall the toner cartridge. 4. Check the harness for proper connection and correct as necessary. 5. Replace the toner cartridge. 6. Replace MFPB.

• Code: C2A23, C2A24
• Description: • C2A23: Toner cartridge/Y new release failure • C2A24: Toner cartridge/K new release failure. The status with the new unit is not cleared after the new toner cartridge is set.
• Causes: • Toner cartridge/ C,M,Y,K • MFP board (MFPB)
• Remedy: 1. Clean the connection between the toner cartridge and the machine if dirty. 2. Check the connector between the toner cartridge-relay CN79-MFPB CN35E for proper connection and correct as necessary. 3. Reinstall the toner cartridge. 4. Check the harness for proper connection and correct as necessary. 5. Replace the toner cartridge. 6. Replace MFPB.

• Code: C3101, C3103
• Description: • C3101: Pressure roller pressure failure • C3103: Pressure roller release failure. C3101: • The encoder pulse does not change even after the lapse of a predetermined period of time after the fusing pressure motor (M11) has started rotating during pressure by the pressure roller. • The fusing pressure home sensor (PS38) is not blocked even after the lapse of a predetermined period of time after the fusing pressure motor (M11) has started rotating during pressure by the pressure roller. C3103: • The encoder pulse does not change even after the lapse of a predetermined period of time after the fusing pressure motor (M11) has started rotating during retraction of the pressure roller. • The fusing pressure home sensor (PS38) is not unblocked even after the lapse of a predetermined period of time after the fusing pressure motor (M11) has started rotating during retraction of the pressure roller.
• Causes: • Fusing unit • Fusing pressure motor (M11) • Fusing pressure home sensor (PS38) • MFP board (MFPB)
• Remedy: 1. Check the connector between M11-MFPB CN15EA for proper connection and correct as necessary. 2. Check the connector between the fusing unit-relay CN98, CN99, CN104-MFPB CN13E for proper connection and correct as necessary. 3. PS38 I/O check, sensor check • Control signal: MFPB CN13E-12 (ON) • Location of electrical component: 11-C 4. M11 operation check • Control signal: MFPB CN15EA-5 to 8 • Location of electrical component: 6-C 5. Replace M11. 6. Replace the fusing unit. 7. Replace MFPB.

• Code: C3201, C3202
• Description: • C3201: Fusing motor failure to turn • C3202: Fusing motor turning at abnormal timing. • C3201: The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning. • C3202: The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
• Causes: • Fusing motor (M3) • MFP board (MFPB)
• Remedy: 1. Check the connector between M3-MFPB CN8E for proper connection and correct as necessary. 2. Check the loading status of the fusing unit drive, and correct the error as necessary. 3. M3 operation check • Control signal: MFPB CN8E-9 (REM), MFPB CN8E-12 (LOCK) • Location of electrical component: 2-C 4. Replace M3. 5. Replace MFPB.

• Code: C3302
• Description: Paper cooling fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
• Causes: • Paper cooling fan (FM8) • MFP board (MFPB)
• Remedy: 1. Check the connector between FM8-relay CN106-MFPB CN15EB for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM8 operation check • Control signal: MFPB CN15EB-9 (REM), MFPB CN15EB-11 (LOCK) • Location of electrical component: 9-C 4. Replace FM8. 5. MFPB ICP3E conduction check 6. Replace MFPB.

• Code: C3425
• Description: Fusing warm-up trouble. • Detected temperature of the heating roller temperature sensor (TEMS) does not go up a given range of temperature even after a lapse of given period of time at warm up. • The temperature detected by the heating roller temperature sensor (TEMS) does not shift from the pre-standby state or the post-print color printing-enable wait state even after the lapse of a predetermined period of time after the completion of warm-up.
• Causes: • Fusing unit • Heating roller temperature sensor (TEMS) • DC power supply (DCPU) • MFP board (MFPB)
• Remedy: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the open/close operation of the right door. 3. Check the fusing unit and DCPU for proper connection and correct or change as necessary. 4. Replace the fusing unit. 5. Replace MFPB. 6. Replace DCPU.

• Code: C3722, C3725, C3726
• Description: • C3722: Fusing abnormally high temperature detection (Edge of the heating roller) • C3725: Fusing abnormally high temperature detection (Main of the heating side) • C3726: Fusing abnormally high temperature detection (Center of the heating side). • C3722: Detected temperature of the heating roller thermistor/1 (TH1) goes beyond a given temperature for a given period of time consecutively. • C3725: Detected temperature of the heating roller temperature sensor (TEMS) goes beyond a given temperature for a given period of time consecutively. • C3726: Detected temperature of the heating roller thermistor/2 (TH2) goes beyond a given temperature for a given period of time consecutively.
• Causes: • Fusing unit • C3722: Heating roller thermistor/1 (TH1) • C3725: Heating roller temperature sensor (TEMS) • C3726: Heating roller thermistor/2 (TH2) • MFP board (MFPB)
• Remedy: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the open/close operation of the right door. 3. Check the fusing unit and MFPB for proper connection and correct or change as necessary. 4. Replace the fusing unit. 5. Replace MFPB.

• Code: C3731
• Description: Fusing abnormally high temperature detection (Hard protector). The hard protector signal error is detected for a given period of time consecutively.
• Causes: • Fusing unit • Heating roller thermistor/1 (TH1) • Heating roller temperature sensor (TEMS) • Heating roller thermistor/2 (TH2) • MFP board (MFPB)
• Remedy: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the open/close operation of the right door. 3. Check the fusing unit and MFPB for proper connection and correct or change as necessary. 4. Replace the fusing unit. 5. Replace MFPB.